JPH1089756A - Connection structure of duct - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform correct positioning without visual watching by locally extending a flange around a connection port of one duct to form a guide part, and receiving a connection end of the other duct to be attached to the connection port. SOLUTION: A connection port 2 of one duct 1 is rectangular, a flange 3 is formed therearound, and its lower side and a part up to an intermediate part of its left side are locally extended to form a guide part 9, and projected from an air-conditioning unit 10. The other duct 4 is assembled to a body side trim 7, an air outlet 11 is provided on an end, and a connection end 5 of the duct 4 is attached to the inside of the flange 3 of the connection port 2 of one duct 1. The connection end is abutted on the guide part 9 to perform the positioning from an upper part or a side part where the guide part 9 of the flange 3 of the connection port 2 of the duct 1 is not present.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct connection structure applied to, for example, an air conditioning system for a motor vehicle.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 5 and 6, a flange (3) is formed around a connection port (2) of one duct (1) and a connection of the other duct (4) is formed. The end (5) is fitted around the flange (3) of the connection port (2) of the one duct (1), and the flange (3) of one duct (1) and the other duct
A configuration is adopted in which a sealing material (6) is interposed between the connection end (5) and (4).

[0003]

In the case of a vehicle air conditioning system, a body side trim (7) is interposed between one duct (1) and the other duct (4). The interconnection is made through the opening (8) of the trim (7), but the duct (4) is assembled by other parts etc.
If it becomes impossible to visually connect (1) to the duct (4), connect the flange (3) of one duct (1) and the connection end (5) of the other duct (4). Positioning workability at the time of fitting is deteriorated, and problems such as air leakage due to displacement of the connecting portion occur.

[0004]

According to the present invention, as a means for solving the above-mentioned conventional problems, a flange (3) around a connection port (2) of one duct (1) is partially extended. A guide (9) is formed, and the connection end (5) of the other duct (4) is received by the guide (9) of the one duct (1), and the connection port of the one duct (1) is received. (2) It is intended to provide a connection structure of the duct inserted in (2).

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS. In the figure, the connection port (2) of one duct (1) is square, and a flange (3) is formed around it, and as shown in FIG. A guide part (9) is formed by partially extending to the middle part on the left side, and the one duct (1) is connected to the air conditioning unit (10).
From.

The other duct (4) has a body side trim.
(7), an outlet (11) is provided at the end, and the connection end (5) of the duct (4) is connected to one of the ducts.
It is fitted inside the flange (3) of the connection port (2) of (1).
At this time, connect the connection end (5) of the duct (4) to the upper side or the side where the guide (9) of the flange (3) of the connection port (2) of the duct (1) does not exist as shown by the dotted lines in FIGS. From the guide part
(9) for positioning, and then, as shown by the solid line in FIG. Fit it. The duct (1)
Flange (3) of the connection port (2) and the connection end of the duct (4)
A sealing material (6) is interposed between (5).

FIG. 4 shows another embodiment of the present invention.
In this specific example, the connection port (22) of one duct (21) is circular, and the guide portion (29) extends in a range of about 90 ° laterally from the lower end of the flange (23) around the connection port (22). Is extended. By providing the guide portion (29) in such a range, the connection end (25) of the other duct (24) is connected to the guide portion (29) from above or from the side where the guide portion (29) does not exist. It can be positioned in contact.

[0008]

According to the present invention, when the ducts are connected to each other, accurate positioning can be performed without visual observation.

[Brief description of the drawings]

 1 to 3 show a specific example of the present invention.

FIG. 1 is an exploded perspective view.

FIG. 2 is a perspective view illustrating connection.

FIG. 3 is a sectional view showing a connection state;

FIG. 4 is a perspective view for explaining connection of another specific example. FIGS. 5 and 6 show a conventional example.

FIG. 5 is an exploded perspective view.

FIG. 6 is a sectional view showing a connection state;

[Explanation of symbols]

 1,21 One duct 2,22 Connection 3,23 Flange 4,24 Other duct 5,25 Connection end 9,29 Guide

Claims (1)

[Claims] 1. A guide part is formed by partially extending a flange around a connection port of one duct, and a connection end of the other duct is received by a guide part of the one duct. Duct connection structure characterized by being inserted into the duct connection port